题目

Our parents sat us down to read and paint _______ all we really wanted to do was to make a mess. A . when B . as C . since D . until 答案：A如图，将△ABC沿BC方向平移1个单位得到△DEF，若△ABC的周长等于8，则四边形ABFD的周长等于（　　）A．8B．10C．12D．14